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NIST Authors in Bold

Displaying 15901 - 15925 of 17290

A Thermodynamic Investigation of Some Reactions Involving Prephenic Acid

February 1, 1999
Author(s)
N Kishore, Marcia J. Holden, Yadu D. Tewari, Robert N. Goldberg
Calorimetric enthalpies of reaction have been measured for the following enzyme-catalyzed reactions at the temperature 298.15 Kprephenate(aq) = phenylpyruvate(aq) + H 20(l) + carbon dioxide(aq), prephenate(aq) + NAD ox(aq) = 4-hydroxyphenylpyruvate(aq) +

Ultrasonic Measurement of Stress in Railroad Wheels

February 1, 1999
Author(s)
R E. Schramm
Acoustic birefringence is the relative change in sound velocity with polarized direction. While the effect is small (usually parts in 10 4), this is a useful tool to probe stress and metallurgical texture since these generate anisotropic changes in the

The NIST Design/Process Planning Integration Project

September 1, 1998
Author(s)
Walter W. Nederbragt, Robert Allen, Shaw C. Feng, Serge Kaing, Ram D. Sriram, Yuyun Zhang
… paper presents a description of the National Institute of Standards and Technology (NIST) Design/Process Planning …

Personal Identification From Mugshot Ear Images

March 1, 1998
Author(s)
F E. McFadden
This work establishes the high value of ear images for personal identification from mugshot data, using the NIST database of police mugshots. It starts with a method for boundary analysis based on two innovations. First edge analysis is performed only

Learning to Set Up Numerical Optimizations of Engineering Designs

January 1, 1998
Author(s)
Mark Schwabacher, T Ellman, H Hirsh
Gradient-based numerical optimization of complex engineering designs offers the promise of rapidly producing better designs. However, such methods generally assume that the objective function and constraint functions are continuous, smooth, and defined

Measurement Comparison of Stylus Radii

January 1, 1997
Author(s)
Jun-Feng Song, Theodore V. Vorburger
Three methods were used for measuring the radii of the same stylus of our stylus instrument. The measurement results were compared and showed good agreement. Using razor blade tracing, the stylus radius was measured as r=1.60um with an expanded uncertainty

Comparison of Submicron Particle Analysis by Auger Electron Spectroscopy, Time-of-Flight Secondary Ion Mass Spectrometry, and Secondary Electron Microscopy With Energy Dispersive X-Ray Spectroscopy.

July 31, 1996
Author(s)
George W. Mulholland, K D. Childs, D Narum, L A. LaVanier, P M. Lindley, B W. Schueler, A C. Diebold
Particulate contamination can result in a significant yield loss during semiconductor device fabrication. As device design rule dimensions decrease the critical defect size also decreases, resulting in the need to analyze smaller defects. Current

Applications of the NIST RoboCrane

August 18, 1994
Author(s)
Roger V. Bostelman, James S. Albus, Nicholas G. Dagalakis, Adam S. Jacoff, J Gross
… The Robot Systems Division of the National Institute of Standards and Technology (NIST) has recently been …

Applications of the NIST ROBOCRANE.

January 1, 1994
Author(s)
Roger V. Bostelman, James S. Albus, Adam S. Jacoff, John L. Gross, N Pagalakis
… The Robot Systems Division of the National Institute of Standards and Technology (NIST) has recently been …

Computational Metrology

September 1, 1993
Author(s)
Ted Hopp
Coordinate measuring systems (CMSs) assess length-based characteristics of mechanical parts by measuring points on the surface and analyzing the point data. Data analysis software can contribute significantly to the total measurement error of a CMS
Displaying 15901 - 15925 of 17290
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